M is the 13th letter of modern English letters and ISO Basic Latin letters.

The letter M comes from Phoenician MEM in Greek mu (μ, μ). The memory of the Semitic people can be most derived from the adoption of the original (Bronze Age) ideograph of "water" in Egyptian characters. The echo value of the Egyptian sign is / N /, which comes from the Egyptian word "water", NT. /M / is also considered noise based because the "water" in the M / is

The Roman numeral Ⅿ stands for the number 1000, although it was not used in Roman times. However, there is little evidence that the letter was put forward by the Romans at the beginning of the following centuries.

The unit prefix m (m) is one million times, and m (m) is one thousandth.

M is the standard abbreviation of meter (or meter) in the international system of units (SI). However, M is also used as an abbreviation for mile.

In terms of the amount of money, m stands for one million: five million dollars is five million dollars.

M usually stands for male or male, especially in combination with F stands for female or female.

M (James Bond) is a fictional character in Ian Fleming's James Bond book and film series

In typesetting, a dash is a punctuation mark with a width equal to the capital M.